docs: def getfileversion(self):
          """Get file version info.
  
          Args:
            no argument
          Returns:
            4-element tuple with the following components:
              -major version number (int)
              -minor version number (int)
              -complete library version number (int)
              -additional information (string)
  
          C library equivalent : Hgetlibversion
                                                     """
  
          status, major_v, minor_v, release, info = _C.Hgetfileversion(self._id)
          _checkErr('getfileversion', status, "cannot get file version")
          return major_v, minor_v, release, info